This year is the driest in recorded history in California. This has forced the East Bay Municipal Utility District (EBMUD) to declare a stage 4 drought, the highest stage ever announced in the area, although even higher stages can apply if the drought gets worse. EBMUD is asking East Bay citizens to cut down their water usage. Water is a vital resource to survive. But most of the water on Earth is salt water and not directly usable for humans. Only about…